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Texas Instruments LM4041CIM7-ADJ/NOPB
- Part No.:
- LM4041CIM7-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041CIM7-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:12,286
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Product details
Overview
LM4041CIM7-ADJ/NOPB from Texas Instruments is a precision adjustable shunt voltage reference in SOT-23-3 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It operates from 60 μA to 12 mA over −40°C to +125°C and supports output voltages from 1.24 V to 10 V in battery-powered instrumentation and automotive sensor signal conditioning.
For engineers reviewing the LM4041CIM7-ADJ/NOPB datasheet, LM4041CIM7-ADJ/NOPB pinout, LM4041CIM7-ADJ/NOPB application, or LM4041CIM7-ADJ/NOPB equivalent, key selection criteria include its adjustable output range, low quiescent current, extended temperature grade, reverse breakdown stability under capacitive loads, and feedback-pin leakage (≤100 nA at 25°C).
Technical Context
The LM4041CIM7-ADJ/NOPB uses a bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its three-terminal configuration (Anode, Cathode, FB) enables programmable output via external resistor divider while maintaining low dynamic impedance (0.3 Ω typical at VOUT = VREF) and stable regulation across load and temperature extremes.
Unlike fixed-output variants, the ADJ version requires explicit feedback connection to the FB pin, where input bias current remains ≤100 nA at 25°C and ≤120 nA over full temperature range-critical for high-impedance divider networks. Output voltage sensitivity to cathode current change is ±1.5 mV over 60 μA–1 mA at 25°C, and thermal hysteresis is limited to 0.08% after cycling between −40°C and +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, enabling precise 5 V or 3.3 V system references via external resistors |
| Initial Tolerance | ±0.5% at 25°C (C-grade), corresponding to ±6.2 mV error at 5 V output setting |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C, contributing ≤±12.5 mV drift across full range at 5 V |
| Operating Current | 60 μA min / 12 mA max-supports ultra-low-power sensing and high-current DAC reference buffering |
| Noise (10 Hz–10 kHz) | 20 μVRMS, suitable for 16-bit ADCs without additional filtering |
| Feedback Current | ≤100 nA at 25°C, minimizing divider resistor-induced errors and power loss |
| Dynamic Impedance | 0.3 Ω typical at VOUT = VREF, ensuring tight regulation under fast load transients |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size), surface-mount, lead-free (NOPB suffix), rated for −40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference node | Internally connected to substrate; must be tied to system ground for proper shunt operation |
| Cathode (Pin 2) | Shunt current sink & output node | Carries total cathode current (IK); voltage at this pin defines regulated output when FB is configured |
| FB (Pin 1) | Feedback input | High-impedance reference input (≤100 nA bias); connects to resistor divider midpoint to set VOUT |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output range | 1.24 V to 10 V via two-resistor divider-enables flexible rail-sensing and multi-voltage system design |
| No external capacitor required | Stable with any capacitive load up to 10 μF-eliminates BOM cost and layout area for output stabilization |
| Extended temperature grade | −40°C to +125°C operation certified per AEC-Q100 Grade 1-qualified for under-hood automotive use |
| Low noise performance | 20 μVRMS (10 Hz–10 kHz) enables direct coupling to precision ADCs and instrumentation amplifiers |
| Reverse breakdown stability | Thermal hysteresis ≤0.08% and long-term drift ≤120 ppm/1000 hrs-ensures calibration integrity in field-deployed equipment |
Applications
| Battery-Powered Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Portable multimeter front-end requiring stable 5 V reference for 16-bit SAR ADC under varying battery voltage (2.7–4.2 V). IC Role / Device Role / Timing Role: Adjustable shunt reference generating precise 5 V output from resistor divider, sinking cathode current to ground. Use Value: Enables <1 LSB error over temperature and battery discharge cycle due to ±0.5% initial tolerance and ≤100 ppm/°C drift. | Use Scenario: Engine control unit (ECU) measuring exhaust gas oxygen sensor output with 3.3 V microcontroller ADC. IC Role / Device Role / Timing Role: Programmable 3.3 V reference derived from LM4041CIM7-ADJ/NOPB FB pin, regulating against ECU supply ripple and thermal gradients. Use Value: Maintains <±2 mV accuracy over −40°C to +125°C ambient, meeting AEC-Q100 Grade 1 requirements for closed-loop fuel control. |
| Energy Metering Reference | Industrial Process Controller Analog Input |
Use Scenario: Class 0.5 electricity meter using isolated delta-sigma ADC sampling voltage and current channels. IC Role / Device Role / Timing Role: Dual-channel reference source-single LM4041CIM7-ADJ/NOPB sets both 2.5 V ADC reference and 1.25 V offset for differential measurement. Use Value: 20 μVRMS noise and 0.08% thermal hysteresis prevent measurement drift during daily thermal cycling in utility cabinets. | Use Scenario: PLC analog input module converting 4–20 mA loop signals to digital with 12-bit resolution. IC Role / Device Role / Timing Role: Shunt reference providing 2.048 V reference to op-amp I/V converter and ADC, operating from 24 V loop supply. Use Value: 60 μA minimum operating current allows reliable startup even with high-series loop resistance; no capacitor needed simplifies conformal coating compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBVR | Fixed 2.495 V reference; higher 100 μA min current; 2% initial tolerance; no adjustable option | Requires redesign of resistor network; unsuitable for sub-2.4 V outputs or precision <1% systems | Select only if fixed 2.5 V output suffices and tighter tolerance is not required |
| MAX6008AEUR+T | Fixed 1.25 V output; 0.2% initial tolerance; SC70-3 package; 35 ppm/°C tempco | Lacks adjustability; smaller footprint but incompatible with >1.25 V reference needs | Prefer for space-constrained 1.25 V systems where lower tempco justifies trade-off in flexibility |
Compared with TL431CDBVR and MAX6008AEUR+T, LM4041CIM7-ADJ/NOPB uniquely combines adjustability (1.24–10 V), C-grade precision (±0.5%), and extended temperature qualification in SOT-23-making it optimal for automotive and portable instrumentation where output flexibility and thermal robustness are mandatory.
Availability
LM4041CIM7-ADJ/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, and industrial process controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4041CIM7-ADJ/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and automotive-qualified components.
The LM4041-N series was engineered for space-constrained, high-accuracy applications demanding low-noise, low-power, and AEC-Q100-compliant shunt references-targeting automotive, energy metering, and portable test equipment markets.
FAQ
What is the maximum output voltage supported by LM4041CIM7-ADJ/NOPB?
The LM4041CIM7-ADJ/NOPB supports an output voltage range of 1.24 V to 10 V, set by an external resistor divider connected to the FB pin. This upper limit is specified in the Absolute Maximum Ratings table and validated across the full −40°C to +125°C operating range. Exceeding 10 V risks violating internal junction limits and invalidating AEC-Q100 qualification.
Does LM4041CIM7-ADJ/NOPB require an external output capacitor for stability?
No, the LM4041CIM7-ADJ/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to 10 μF, eliminating the need for added capacitance in most applications. This feature reduces bill-of-materials count and PCB area, particularly valuable in compact SOT-23 layouts used in portable and automotive electronics.
What is the feedback pin (FB) input bias current specification for LM4041CIM7-ADJ/NOPB?
The FB pin input bias current for LM4041CIM7-ADJ/NOPB is ≤100 nA at 25°C and ≤120 nA over the full −40°C to +125°C temperature range. This ultra-low leakage enables use with high-value resistor dividers (e.g., 1 MΩ–10 MΩ) without introducing significant voltage error, preserving accuracy in precision-adjustable reference designs.
Is LM4041CIM7-ADJ/NOPB qualified for automotive applications?
Yes, LM4041CIM7-ADJ/NOPB is AEC-Q100 Grade 1 qualified for automotive use, with guaranteed operation from −40°C to +125°C ambient temperature. It meets stringent reliability and stress-test requirements defined in the AEC-Q100 standard, making it suitable for engine control, body electronics, and ADAS sensor signal conditioning where long-term parametric stability is critical.
How does the temperature coefficient of LM4041CIM7-ADJ/NOPB impact system accuracy?
The LM4041CIM7-ADJ/NOPB has a maximum average temperature coefficient of 100 ppm/°C over −40°C to +125°C. At a 5 V output setting, this contributes ≤±62.5 mV total drift across the full range-well within 0.1% system tolerance budgets. Its curvature-compensated bandgap design minimizes nonlinearity, ensuring predictable, monotonic drift behavior for calibration algorithms.
LM4041CIM7-ADJ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- Current - Output:
- 12 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4041CIM7-ADJ/NOPB FAQ
1.How can I place an order for LM4041CIM7-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIM7-ADJ/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4041CIM7-ADJ/NOPB reliable?
The price and inventory of LM4041CIM7-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIM7-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041CIM7-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CIM7-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CIM7-ADJ/NOPB?
LM4041CIM7-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIM7-ADJ/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4041CIM7-ADJ/NOPB?
For technical support, including LM4041CIM7-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIM7-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041CIM7-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041CIM7-ADJ/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4041CIM7-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041CIM7-ADJ/NOPB?
All LM4041CIM7-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIM7-ADJ/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4041CIM7-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041CIM7-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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